Annual report [Section 13 and 15(d), not S-K Item 405]

Note 17 - Income Taxes (Details Textual)

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Note 17 - Income Taxes (Details Textual) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Tax Credit Carryforward [Line Items]    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 15.00% 15.00%
Tax Credit Carryforward, Amount $ 19.0  
Foreign Tax Jurisdiction [Member] | Canada Revenue Agency [Member]    
Tax Credit Carryforward [Line Items]    
Operating Loss Carryforwards, Total 317.9  
Foreign Tax Jurisdiction [Member] | Internal Revenue Service (IRS) [Member]    
Tax Credit Carryforward [Line Items]    
Operating Loss Carryforwards, Total 1.2  
Investment Tax Credit Carryforward [Member] | Foreign Tax Jurisdiction [Member] | Canada Revenue Agency [Member]    
Tax Credit Carryforward [Line Items]    
Tax Credit Carryforward, Amount 2.3  
Investment Tax Credit Carryforward [Member] | Domestic Tax Jurisdiction [Member] | Canada Revenue Agency [Member]    
Tax Credit Carryforward [Line Items]    
Tax Credit Carryforward, Amount $ 3.1